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Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNE
From: |
Cornelia Huck |
Subject: |
Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD |
Date: |
Mon, 4 Dec 2017 18:53:52 +0100 |
On Mon, 4 Dec 2017 18:34:36 +0100
David Hildenbrand <address@hidden> wrote:
> On 04.12.2017 18:22, Cornelia Huck wrote:
> > On Mon, 4 Dec 2017 13:55:05 +0100
> > David Hildenbrand <address@hidden> wrote:
> >
> >> We somehow missed that, new kernels require it.
> >
> > Why _new_ kernels? I think we have unconditionally issued stcrw since
> > back in 2.2?
>
> Okay, the problem is then rather related to my setup. No ccw devices ->
> no stcrw.
>
> How could we ever add ccw devices to a TCG guest then?
Hotplug never worked before your patches. Coldplug does not create
machine checks and thus does not trigger the guest to do STCRW. (Only
STSCH, in keeping with "all channel I/O acronyms look the same".)
- [qemu-s390x] [PATCH v1 for-2.12 4/5] s390x/tcg: indicate value of TODPR in STCKE, (continued)
[qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, David Hildenbrand, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, Cornelia Huck, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, David Hildenbrand, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD,
Cornelia Huck <=
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, David Hildenbrand, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, Cornelia Huck, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, David Hildenbrand, 2017/12/04
- Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, Cornelia Huck, 2017/12/05
Re: [qemu-s390x] [PATCH v1 for-2.12 5/5] s390x/tcg: wire up STORE CHANNEL REPORT WORD, Thomas Huth, 2017/12/06
Re: [qemu-s390x] [Qemu-devel] [PATCH v1 for-2.12 0/5] s390x/tcg: CCW hotplug support, no-reply, 2017/12/04
Re: [qemu-s390x] [PATCH v1 for-2.12 0/5] s390x/tcg: CCW hotplug support, Cornelia Huck, 2017/12/04
Re: [qemu-s390x] [Qemu-devel] [PATCH v1 for-2.12 0/5] s390x/tcg: CCW hotplug support, no-reply, 2017/12/07